What is the longest line segment that can be drawn in a right rectangular prism that is 16 cm​ long, 13

cm​ wide, and 9

cm​ tall?

Two customers went to a post office. first customer paid $12 for 14 and 5 envelopes the second paid 24.80 for 10 postcards and 15 envelopes. what is cost of each envelope?

Aflower has 26 chromosomes. to create a new flower, how many chromosomes would a sperm cell have? what is this process called? part 2: within a flower cell that has 26 chromosomes, how many chromosomes would a cell that is created within the stem of a flower as it grows, have? what is this process called?

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).